import functools

from flask import current_app, jsonify
from flask import g
from flask import session

from info.utits.response_code import RET


def do_index_class(index):
    if index == 1:
        return "first"
    elif index == 2:
        return 'second'
    elif index == 3:
        return 'third'
    else:
        return ""


def user_login_data(view_func):
    """用户登录成功的装饰器"""
    @functools.wraps(view_func)
    def wrapper(*args,**kwargs):
        user_id = session.get("user_id")
        user = None  #type: User
        from info.models import User
        if user_id:
            try:
                user = User.query.get(user_id)
            except Exception as e:
                current_app.logger.error(e)
                return jsonify(error=RET.DBERR,errmsg="查询用户对象异常")
        g.user = user
        result = view_func(*args,**kwargs)
        return result
    return wrapper

